代码：
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style> *{margin:0;padding:0;} ul{list-style:none;}img{border:0;} #tab{width:1000px;height:500px;margin:50px auto;} #tab .title {width:200px;height:500px;display:inline-block;} #tab .title li {width:200px;height:125px;float:left;line-height:125px;text-align:center;font-size:30px;background:#f1f1f1;border-bottom:1px dotted #000;} #tab .title li.active {background:#fff;} #tab .title li:hover{background:#fff;} #tab .content {width:799px;height:500px;float:right;display:inline-block;position:relative;border:none;border:none;} #tab .content img{position:absolute;top:0;left:0;width:799px;height:500px;} #tab .content ul {position:absolute;width:799px;height:45px;bottom:0;left:0;filter(alpha:80);opacity:0.8;background:#000;} #tab .content ul li {float:left;height:45px;line-height:45px;background:#d5d5d5;border-right:1px solid #fff;cursor:pointer;text-align:center;} #tab .content ul li.active {background:red;} #tab .content ul li:hover{background:red;} </style> <script> window.onload = function () { var tab = document.getElementById('tab'); var title = tab.getElementsByClassName('title')[0]; var titleLi = title.getElementsByTagName('li'); var main = tab.getElementsByClassName('main')[0]; var img = main.getElementsByTagName('img')[0]; var ul = main.getElementsByTagName('ul')[0]; var subtitleLi = ul.getElementsByTagName('li'); var arr = [ { title : '最热团购', subtitle : ['最热团购1','最热团购2','最热团购3'], pic : [ 'img/tab/1-1.png', 'img/tab/1-2.png', 'img/tab/1-3.png' ] }, { title : '商城特惠', subtitle : ['商城特惠1','商城特惠2','商城特惠3','商城特惠4'], pic : [ 'img/tab/2-1.png', 'img/tab/2-2.png', 'img/tab/2-3.png', 'img/tab/2-4.png' ] }, { title : '名品推荐', subtitle : ['名品推荐1','名品推荐2','名品推荐3','名品推荐4','名品推荐5'], pic : [ 'img/tab/3-1.png', 'img/tab/3-2.png', 'img/tab/3-3.png', 'img/tab/3-4.png', 'img/tab/3-5.png' ] }, { title : '缤纷活动', subtitle : ['缤纷活动1','缤纷活动2','缤纷活动3','缤纷活动4'], pic : [ 'img/tab/4-1.png', 'img/tab/4-2.png', 'img/tab/4-3.png', 'img/tab/4-3.png', ] } ]; // 初始化 for ( var i = 0; i < arr.length; i++ ) { // 大选项卡的标题 var oLi = document.createElement('li'); oLi.innerHTML = arr[i].title; oLi.index = i; oLi.onclick = function () { highlight(this); ul.innerHTML = ''; changeTab(this.index); } title.appendChild(oLi); } changeTab(0); function changeTab(num) { // 大选项卡的内容 img.src = arr[num].pic[1]; // 小标题 for ( var j = 0; j < arr[num].subtitle.length; j++ ) { oLi = document.createElement('li'); oLi.innerHTML = arr[num].subtitle[j]; oLi.style.width = Math.floor(parseInt(800 / arr[num].subtitle.length) - 2) + 'px'; oLi.index = j; oLi.onclick = function () { highlight(this); this.parentNode.previousElementSibling.src = arr[num].pic[this.index]; } ul.appendChild(oLi); } } function highlight (ele) { var aLi = ele.parentNode.children; for ( var i = 0; i < aLi.length; i++ ){ aLi[i].className = ''; } ele.className = 'active'; } } </script> </head> <body> <div> <ul> </ul> <div> <div> <img> <ul> </ul> </div> </div> </div> </body> </html>